Ultrathin MXene/Aramid Nanofiber Composite Paper with Excellent Mechanical Property for Efficient Electromagnetic Interference Shielding
MXenes, new two-dimensional compounds with hydrophilic surfaces and high metallic conductivity, have attracted significant interest in electromagnetic interference shielding field in recent years. Nevertheless, poor mechanical properties and brittle nature are bottlenecks for their commercial application. Herein, one-dimensional ANFs were designed as the intermolecular cross-linker between d-Ti3C2Tx flakes and MXene (d-Ti3C2Tx)/aramid nanofibers (ANFs) composite paper with multi-layered structure was fabricated via vacuum-assisted filtration approach. Further investigation revealed that the ANFs and MXene displayed good combination by hydrogen bonding, and MXene/ANFs composite papers exhibited excellent mechanical properties and superior electrical conductivity. The MXene/ANFs composite paper possessed a favorable shielding effectiveness (SE) which reached ~28 dB in 8.2~12.4 GHz (X band) with an ultra-thin thickness ~ 17 μm and showed potential application prospect as advanced composite in sensitive electronic products.